Quick faucet connector capable of preventing reverse flow

Abstract

The utility model provides an anti-backflow quick faucet connector, which comprises a faucet and a faucet connector, the faucet connector comprises a first connecting pipe and a second connecting pipe which are connected with each other, one end of the first connecting pipe is connected with a thread groove on the periphery of the faucet in a matching way through a clamping bulge, and the other end of the first connecting pipe is connected with a thread groove on the periphery of the faucet; the other end of the first connecting pipe is in threaded connection with a second connecting pipe, an anti-backflow plug is installed between the first connecting pipe and the second connecting pipe and comprises a flange plate matched with the end face of the first connecting pipe, the flange plate is provided with a guide column on one side of the first connecting pipe, and a first sealing ring is arranged on the periphery of the guide column. The first sealing ring is hermetically connected with the inner wall of the first connecting pipe. According to the quick faucet connector, the function of preventing reverse flow is achieved by preventing the reverse flow plug from moving back and forth.

Description

Technical Field

[0001] The utility model belongs to the technical field of faucet connection, and in particular relates to a quick faucet connector for preventing backflow. Background Art

[0002] The faucet is especially useful in some outdoor places, such as when camping, when it is necessary to connect the faucet to the water tank. When water is supplied to the water tank, the faucet and the water tank need to be quickly connected. The connection structure of the existing quick faucet connector for connecting the water tank is relatively complicated, and ball valves need to be installed at both the faucet and the water tank connection. Not only is the connection inconvenient, but it is also prone to technical problems such as water backflow in the water tank.

[0003] Chinese utility model patent No. 202320050898.8 discloses a single-tube faucet quick connector, which is achieved by inserting a limit plate into the reserved opening of the existing pool plate, and tightening the upper surface of the limit plate through two locking bolts to achieve the effect of fixing the fixing ring and the limit plate to the inner side of the reserved opening through the locking bolts, which is convenient for the later installation of the water pipe in the reserved opening; when the countersunk locking screw is screwed into the inside of the circular recessed hole, the inner end of the countersunk locking screw will hit the inclined surface. Due to the setting of the inclined surface, the tighter the countersunk locking screw is pressed, the tighter the fixing ring will be against the inside of the circular recessed hole, so that the connection cover and the fixing ring are firmly fixed. By opening a notch, one of the locking bolts can be easily installed on the bolt fixing plate. This type of faucet quick connector does not have the technical solution of preventing backflow and fast and convenient connection. Utility Model Content

[0004] The utility model provides a quick faucet connector with a simple structure, convenient connection and backflow prevention.

[0005] A quick faucet connector for preventing backflow includes a faucet and a faucet connector. The faucet connector includes a first connecting tube and a second connecting tube, one end of the first connecting tube being connected to a threaded groove on the outer periphery of the faucet via a snap-fit protrusion. The other end of the first connecting tube is threadedly connected to the second connecting tube. A backflow prevention plug is installed between the first and second connecting tubes. The backflow prevention plug includes a flange that fits the end face of the first connecting tube. The flange is provided with a guide post on one side of the first connecting tube. A first sealing ring is provided on the outer periphery of the guide post. The first sealing ring is sealed to the inner wall of the first connecting tube. This quick faucet connector for preventing backflow not only achieves connection by simply rotating one or two turns through the snap-fit protrusion on one end of the first connecting tube that fits the threaded groove on the outer periphery of the faucet, resulting in a fast connection speed, but also prevents backflow from the water tank after it is full by using the backflow prevention plug. Of course, the first sealing ring on the outer periphery of the guide post and the inner wall of the first connecting tube achieve a technical effect of rapid sealing to prevent water leakage during the faucet water flow.

[0006] The threaded groove on the outer periphery of the faucet tightens the first connecting pipe and pushes the anti-backflow plug away from the first connecting pipe. At this time, the water from the faucet can quickly flow through the first connecting pipe to the water tank or other device that needs water.

[0007] The threaded groove on the faucet's periphery simultaneously loosens the first connecting tube and seals the anti-backflow plug against it. When the threaded groove on the faucet's periphery loosens the first connecting tube, the pressure within the water tank or water container reverses and seals the anti-backflow plug against the first connecting tube, preventing backflow and preventing overflow after the water tank is filled. The inner wall of the first connecting tube cooperates with guide vanes on the periphery of the guide column to prevent the anti-backflow plug from deflecting and becoming stuck during its forward and backward movement. A second sealing ring is provided between the faucet and the inner wall of the first connecting tube to enhance sealing performance.

[0008] One end of the second connecting pipe is provided with a nut, which is convenient for connecting to a container that needs to be filled with water, such as a water tank.

[0009] The first connecting pipe and the faucet connecting end are provided with a connecting flange to facilitate positioning and installation.

[0010] The faucet is provided with a ball valve switch, which controls the opening and closing of the ball valve inside the faucet, making it easy to control the opening and closing of the faucet.

[0011] The utility model realizes the function of a quick faucet connector for preventing backflow by preventing the backflow plug from moving back and forth, and adopts the technical performance of quick connection by adopting a first connecting pipe end that is connected to the threaded groove on the outer periphery of the faucet through a snap-fit protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a quick faucet connector for preventing backflow in the utility model;

[0014] Figure 2 This is a schematic diagram of the exploded installation structure of a quick faucet connector that prevents backflow in the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the first connecting pipe in the present utility model;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the anti-backflow plug in the utility model. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-4 The specific implementation method further describes the technical solution of this patent in detail.

[0018] A quick faucet connector for preventing backflow includes a faucet 16 and a faucet connector. The faucet connector includes a first connecting pipe 3 and a second connecting pipe 2 that are connected to each other. One end of the first connecting pipe 3 is connected to the threaded groove 4 on the outer periphery of the faucet 16 through a snap-fit protrusion 18. The other end of the first connecting pipe 3 is connected to the second connecting pipe 2 through a thread 9. A backflow prevention plug 10 is installed between the first connecting pipe 3 and the second connecting pipe 2. The backflow prevention plug 10 includes a flange 12 that matches the end face of the first connecting pipe. The flange 12 is provided with a guide column 17 on one side of the first connecting pipe 3. A first sealing ring 13 is provided on the outer periphery of the guide column 17. The first sealing ring 13 is sealed and connected to the inner wall 8 of the first connecting pipe.

[0019] As a preferred structure, the threaded groove 4 on the outer periphery of the faucet 16 simultaneously tightens the first connecting pipe 3 and pushes the backflow prevention plug 10 away from the first connecting pipe 3. When the threaded groove 4 on the outer periphery of the faucet 16 loosens the first connecting pipe 3, the backflow prevention plug 10 seals the first connecting pipe 3. As a quick-seal structure, a second sealing ring 7 is provided between the faucet 16 and the inner wall 8 of the first connecting pipe.

[0020] In order to improve the convenience of connection, a nut 1 is provided at one end of the second connecting pipe 2. A connecting flange 5 is provided at the connecting end of the first connecting pipe 3 and the faucet 16.

[0021] In order to facilitate the opening and closing of the faucet 16, a ball valve switch 6 is provided, and the ball valve switch 6 controls the opening and closing of the ball valve inside the faucet 16.

[0022] As a structure preferably for improving the guiding performance of preventing the backflow plug 10 from moving, the inner wall 8 of the first connecting pipe cooperates with the guide vanes 15 provided on the outer periphery of the guide column 17 .

[0023] The working process of the quick faucet connector for preventing backflow of the present invention is as follows: the faucet 16 is plugged into the first connecting pipe 3, and then rotated a few times to complete the quick connection between the engaging protrusion 18 of the first connecting pipe 3 and the threaded groove 4 on the outer periphery of the faucet 16, and at the same time, the backflow prevention plug 10 is pushed away from the first connecting pipe 3, and then the ball valve switch 6 is opened to start adding water to the water tank. Whether the water adding is completed or not, the faucet 16 can be rotated linearly to complete the separation between the faucet 16 and the first connecting pipe 3. After separation, the backflow prevention plug 10 is reset and sealed to the first connecting pipe 3 under the water pressure of the water tank to prevent the water in the water tank from flowing back.

[0024] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A quick faucet connector for preventing backflow, comprising a faucet (16) and a faucet connector, characterized in that: The faucet connector comprises a first connecting tube (3) and a second connecting tube (2) connected to each other, one end of the first connecting tube (3) is connected to a thread groove (4) on the outer periphery of the faucet (16) through a snap-fit protrusion (18), the other end of the first connecting tube (3) is connected to the second connecting tube (2) through a thread (9), and a backflow prevention plug (10) is installed between the first connecting tube (3) and the second connecting tube (2), the backflow prevention plug (10) comprises a flange (12) matched with the end face of the first connecting tube, the flange (12) is provided with a guide column (17) on one side of the first connecting tube (3), the outer periphery of the guide column (17) is provided with a first sealing ring (13), and the first sealing ring (13) is sealed and connected to the inner wall (8) of the first connecting tube.

2. A quick faucet connector for preventing backflow according to claim 1, characterized in that: The threaded groove (4) on the outer periphery of the faucet (16) tightens the first connecting pipe (3) and simultaneously pushes the backflow prevention plug (10) away from the first connecting pipe (3).

3. The quick faucet connector for preventing backflow according to claim 1, characterized in that: The threaded groove (4) on the outer periphery of the faucet (16) loosens the first connecting pipe (3) while preventing the backflow plug (10) from sealing the first connecting pipe (3).

4. A quick faucet connector for preventing backflow according to claim 1, characterized in that: One end of the second connecting pipe (2) is provided with a nut (1).

5. The quick faucet connector for preventing backflow according to claim 1, characterized in that: The connecting end of the first connecting pipe (3) and the faucet (16) is provided with a connecting flange (5).

6. The quick faucet connector for preventing backflow according to claim 1, characterized in that: The faucet (16) is provided with a ball valve switch (6), and the ball valve switch (6) controls the opening and closing of the ball valve inside the faucet (16).

7. The quick faucet connector for preventing backflow according to claim 1, characterized in that: The inner wall (8) of the first connecting pipe cooperates with the guide blades (15) provided on the outer periphery of the guide column (17).

8. The quick faucet connector for preventing backflow according to claim 1, characterized in that: A second sealing ring (7) is provided between the faucet (16) and the inner wall (8) of the first connecting pipe.

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